Understanding Express.js | Evan HahnThis is aimed at people who have some familiarity with Node.js. They know how to run Node scripts and can install packages with npm. You don't have to be an expert, though -- I promise. This guide was last updated for Express 3.2.5. It's an introduction and mostly deals with concepts. Express.js describes itself better than I can: "a minimal and flexible node.js web application framework". It help
